1; Test shortening of NILL to NILF when the result is used as a shift amount. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5; Test logical shift right. 6define i32 @f1(i32 %a, i32 %sh) { 7; CHECK-LABEL: f1: 8; CHECK: nill %r3, 31 9; CHECK: srl %r2, 0(%r3) 10 %and = and i32 %sh, 31 11 %shift = lshr i32 %a, %and 12 ret i32 %shift 13} 14 15; Test arithmetic shift right. 16define i32 @f2(i32 %a, i32 %sh) { 17; CHECK-LABEL: f2: 18; CHECK: nill %r3, 31 19; CHECK: sra %r2, 0(%r3) 20 %and = and i32 %sh, 31 21 %shift = ashr i32 %a, %and 22 ret i32 %shift 23} 24 25; Test shift left. 26define i32 @f3(i32 %a, i32 %sh) { 27; CHECK-LABEL: f3: 28; CHECK: nill %r3, 31 29; CHECK: sll %r2, 0(%r3) 30 %and = and i32 %sh, 31 31 %shift = shl i32 %a, %and 32 ret i32 %shift 33} 34 35; Test 64-bit logical shift right. 36define i64 @f4(i64 %a, i64 %sh) { 37; CHECK-LABEL: f4: 38; CHECK: nill %r3, 31 39; CHECK: srlg %r2, %r2, 0(%r3) 40 %and = and i64 %sh, 31 41 %shift = lshr i64 %a, %and 42 ret i64 %shift 43} 44 45; Test 64-bit arithmetic shift right. 46define i64 @f5(i64 %a, i64 %sh) { 47; CHECK-LABEL: f5: 48; CHECK: nill %r3, 31 49; CHECK: srag %r2, %r2, 0(%r3) 50 %and = and i64 %sh, 31 51 %shift = ashr i64 %a, %and 52 ret i64 %shift 53} 54 55; Test 64-bit shift left. 56define i64 @f6(i64 %a, i64 %sh) { 57; CHECK-LABEL: f6: 58; CHECK: nill %r3, 31 59; CHECK: sllg %r2, %r2, 0(%r3) 60 %and = and i64 %sh, 31 61 %shift = shl i64 %a, %and 62 ret i64 %shift 63} 64